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Everything posted by PeterW
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The right kit, filters, good sky transparency and knowing the scale of object you’re expecting all help… aperture isn’t everything. Peter
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Yes, like like both went pretty fast. PEter
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Attempting first approach to night vision astronomy
PeterW replied to Leo Colombo's topic in Discussions - EEVA Equipment
The general rule is that if it’s not Gen3 then you’ll be disappointed. Camera based EEA and tracking mounts will be your best bet. The higher the Gen3 spec the narrow the filters and the better the result. That tax rate is painful, more so as NV is not cheap to start with and many countries face export restrictions. Peter -
There is a very reasonably priced unit in the for sale forum. You could sell the odd body part that you don’t absolutely need 😉 GPS hasn’t really changed hugely, mostly the receivers(?), it’s been in operation something kg like 40years or more. Gen3 NV is nearing 30yrs old. can’t see the prices dropping… though thermal tech continues to drop in price the way that much other tech does. Peter
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It appears better is possible, @GavStarhas stopped imagining. @Highburymarkatnleast you got gain control and a non-green view! Always keep an eye out for those”special” transparent nights when the nebulae put up less of a fight to being seen…. Peter
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I concur, he’s got plenty more to go after https://www.cloudynights.com/topic/477453-h-beta-filter-is-it-any-good/?p=6232667#entry6232667 Peter
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For centre focus you need to set the dolioptre adjust and then get the bandit on without it twisting anything, for Individual focus its plain annoying. The eyepieces are a bit bigger than some other bins, so it’s worse than other people might find. I use the bandits in the daytime on other binocukars and they’re very handy. Peter
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I’ve had bandit issues with my IF 10x50, I have plans to deal with this by replacing the bandit which is otherwise very handy to improve the view. Peter
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Great to hear you’ve got off to a good start with it! Peter
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I’m enjoying the views with a 66mm and 80ED for spotting. You get wider views and higher mags than spotters…. Astro eyepieces are better and Zooms are a compromise. The downside is that one thinks twice before lugging the extra weight. Peter
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… delivered by Santa? Peter
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Observing targets for severe light pollution?
PeterW replied to ONIKKINEN's topic in Observing - Discussion
Not huge sums as the filters I originally bought were not the highest spec ones. As you can store pairs of 1.25” filters in small boxes it takes up a lot solace than eyepiece pairs! Peter -
Observing targets for severe light pollution?
PeterW replied to ONIKKINEN's topic in Observing - Discussion
…. Like eyepieces I have several pairs of filters now… though I am trying to ”optimise” (read get rid of the ones I don’t absolutely need). By wedging 1.25” filters into the eyecups with 5mm foam sheet it saves me needing to buy any 2” filters! Peter -
Observing targets for severe light pollution?
PeterW replied to ONIKKINEN's topic in Observing - Discussion
I was using OIII I think, saw it from Esher too. With bins you need to get things in pairs! Peter -
Observing targets for severe light pollution?
PeterW replied to ONIKKINEN's topic in Observing - Discussion
https://las-astro.org.uk/docs/Loughton_List_v2_0.pdf Make sure you have straylight shielding and use an observing hood or similar to keep the direct lights out of your eyes so you can improve your dark adaption. I can see bits of the Veil nebula with binoculars under conditions worse than where @Captain Magenta used to live… 🙂 Peter -
3x is super easy to use. What’s wrong with the “pirate scope”look? I have an 80mm and it’s fine to sweep about. You don’t want to make the view too stable, a bit of wobbling makes the nebulae easier to see. Peter
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Good to hear it’s been of interest. I live under ugh skies, so plan to throw all the filtration I can…. Peter
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ED just refers to the use of low dispersion glass (fluorite or other) that help optical designers make systems that can deliver chromatic aberration free views… how it’s used, what materials etc vary widely and how “colour free” does too…. Best to see what people think of specific products as to how well they perform. Peter
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You may want to add a larger exit pupil and more aggressive filtration… https://www.cloudynights.com/topic/722322-pushing-the-filter-envelope-observing-galactic-nebulae-with-handheld-binoculars-under-suburban-skies/ Peter
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Think of the exit pupil, sometimes you want to maximise for a brighter view, not just add aperture which just changes the scale. What sized stuff are you after? Would you also be better suited with a smaller set for larger objects? Peter
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I have the 79mm 45degree as I wanted it for daytime backpack able use… lovely wide, high power views. My choice was made by the size of backpack I had and my desire for carrying heavy things long distances. for purely nighttime I would go 90 degree, though with a little contortion I can get pretty much to the zenith. I use a medium camera tripod and fluid head that I adjust the locking on to hold things in place. Likely under mounted, but it works fine for giving me nice views and avoids the need for a parallelogram the size and weight of a small battleship. there is a “centre mount” that APM sell and that can be popped onto a tripod and hold these types of binocular, seems interesting but I’ve not found too many reviews of it. makensure you have some budget for eyepieces…. You’ll be needing pairs of them which can get costly quickly. Peter
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Good to hear things have settled down. I once disassembled a pair of wonky bins, reassembled (no collimation twiddling) and it magically was fixed…. Great when it happen. Enjoy the view! Peter
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Al Nagler of Televue discussing night vision astronomy
PeterW replied to GavStar's topic in EEVA - Discussion
Secondhand kit is in the 2-3k range and continues to be. The prices for new high end stuff are nuts, but lower end stuff will still show plenty. Peter